Count number for a list, which is broken into smaller list

Question

Could someone please tell me how to how count status correctly?
I have list with a large size and it is broken into a group of smaller lists. I want to show the status when each list is going through the function getNextToSend(). For example, the size of the large list is 105, and it is broken into size 20 for each group. The getNextToSend() method is called 6 times. The first 5 times with 20 list each and the last group size is 5. The simple version of the code is blew. How can I get int generate3 in System.out.println("generate3 is: " + generate3); printed as 1,2.....105. What I got now is it counts from 1 - 20, then it count 1-20. again.
Thanks,
Katie
public class Counter{
  private Vector list;
  public HttpSession session;
  private int count = 0;
  public Counter(Vector list, HttpServletRequest request) {
    this.list = list;
    this.session = request.getSession();
private synchronized Profile getNextlToSend(){
     if( this.list.size()==0){
          return null;
   this.count++;
   int generate = Add(this.count++);
   session.setAttribute("number" , Integer.toString(generate));
   return (Profile)this.list.remove(0);
private int Add(int generate2)
{ int generate3 =+ generate2 ;
   System.out.println("generate3 is: " + generate3);
   return generate3;

Answer 1

Here is what happens when use static or non-static:
Using static: if only one user uses the program (use
java & jsp), it works fine. But when multi users use
the program, the counter get mess, one user sees
other user's count number.
Using non-static: the counter repeates itself. 1,
2....20, then again 1,2..20.That's why you pass the starting index to the counter in the constructor. If I want it to count starting at 60 then I pass that value (60) to the constructor and we assign it to the internal count. You would then modify the code that uses the Counter to pass this value somehow.
    public Counter(Vector list, HttpServletRequest request, int count) {
        this.list = list;
        this.session = request.getSession();
        this.count = count;
    }When you're breaking up the larger list you'd have to pass the current index to the Counter you create for each sublist. So for elements 0-19 you'd pass it either 0 or use the other constructor. For elements 20-39 you'd pass it a value of 20 to indicate it should start counting at 20.